package com.wmx.apachekafka;

/**
 * @author wangMaoXiong
 * @version 1.0
 * @date 2020/10/8 12:43
 */
public class Wang {
    public static void main(String[] args) {
        String s = "123456789";
        StringBuffer stringBuffer = new StringBuffer(s);
        StringBuffer reverse = stringBuffer.reverse();
        System.out.println(reverse);

        StringBuilder stringBuilder = new StringBuilder(s);
        stringBuilder.reverse();
        s.isEmpty();
    }

}
